Toshiba Lighting & Technology Corporation

Osram-melco Toshiba Lighting Ltd.

Makoto Bessho

Makoto Sakai

Kazuyoshi Okamura

Akitoshi Komiya

Akiko Saito

Keiichi Shimizu

Hitoshi Kawano

Nobuhiko Betsuda

Yusuke Shibahara

Nobuo Shibano

Hiroki Tamai

Takumi Suwa

Hideto Mochizuki

Masayuki Takahashi

Kazuhiro Ikejiri

Tetsuya Sugano

A lighting device may include a substrate attached to one edge side of a radiator and a cover may be attached to cover the substrate. Heat-radiating fins may be provided on the other edge side of the radiator and an air-cooling unit may be rotatably provided inside the heat-radiating fins, thereby enabling freely rotation. In one or more examples, a case storing a circuit part is attached to the other edge side of the radiator and a cap is provided to the case. By the air flow from the air-cooling unit, the heat-radiating fins are caused to be a part of the ventilation path to allow for ventilation of the inside of the radiator.

Lighting device

Light emitting diode (LED) bulb

A substrate is attached to one edge side of a radiator and a globe is attached covering the substrate. Heat-radiating fins are provided on the other edge side of the radiator and an air-cooling unit is rotatably provided inside the heat-radiating fins which enables to freely rotate. A case storing a circuit part is attached to the other edge side of the radiator and a cap is provided to the case. By the wind blast from the air-cooling unit, the heat-radiating fins are caused to be a part of the ventilation path to allow for ventilation of the inside of the radiator.

Halogen bulb

A halogen incandescent lamp comprises a light-transmitting envelope filled with a gas including a halogen gas and an inert gas. A pair of inner conductive wires is arranged in the envelope. A triple-coiled filament, which has a first coiling, a second coiling, and a third coiling having about 1.5 to about 4 turns, is re-crystallized, is arranged in the envelope, and is connected between ends of the inner conductive wires. The triple-coiled filament is held by a support member. The halogen incandescent lamp may be utilized to a lighting apparatus.

Halogen incandescent lamp and a lighting apparatus using the lamp

An incandescent lamp has an envelope having a bulbous portion including a wall defining a space, a thin tube extending outwardly along a central axis of the bulbous portion so as to communicate with the space, and a sealed portion located on an opposite end of the bulbous portion from the thin tube. The wall has a slope inclined toward the thin tube. A filament is provided along the central axis of the bulbous portion. An optical interference layer is arranged on a surface of the wall for reflecting infrared rays toward the filament. A first lead wire has a first end portion fixed in the sealed portion of the envelope, a second end portion coupled to one end of the filament and an intermediate U-shaped portion inserted into the thin tube for regulating a position of the filament. A second lead wire has a first end portion fixed in the sealed portion of the envelope and a second end portion coupled to another end of the filament.

Incandescent lamp and a lighting apparatus using the lamp

Growing community of inventors

Yokohama, Japan

Makoto Bessho